This is the incredible moment an off-duty policewoman took down a shoplifter armed with a knife — while dressed in jeans and sandals.

While filling up her car at a petrol station in Gillingham, Kent, on June 8, PC Alice O’Brien noticed a confrontation between store staff and a thief. Without hesitation, she sprang into action.

The shoplifter, 45-year-old Nicholas Noble, had stolen an ice cream bar, ice lollies, and bacon. During the struggle, a member of the public discovered and removed a knife from Noble’s waistband.

Despite being off-duty and casually dressed, PC O’Brien bravely held the suspect down against a fence and on the ground until backup arrived. She even called colleagues on her phone while restraining him.

“I did what any of my colleagues would do, which is help members of the public who are in potential danger,” PC O’Brien said. “When I saw them get violent, I knew I had to step in.”

Noble pleaded guilty to shoplifting, possession of an offensive weapon, and resisting an officer. He was sentenced to 12 months in prison (six months for this case plus six for a separate offense).

PC O’Brien later added that she was relieved the knife was spotted and removed, and that the community is now safer with Noble behind bars.

True bravery has no uniform — just quick thinking and courage.

Would you step in like PC O’Brien if you saw something like this happening?